JF220 lets you have “secure area” which can be accessed only by a fingerprint or a password which were set in advance and “general area” which can be accessed by anyone else who “owns” this thumb drive physically.

Now, let’s say that you lost this drive with files inside the “secure area”.
You may think it wouldn’t be possible to retrieve those “important” files because they are inside the “SECURE” area.
But, unfortunately, anyone who “accidentally” owns your JF220 can restore(or recover) those files by re-partitioning the areas.
(i.e “4G-secure + 4G-general” -> “50M-secure + 7.5G-general”)

You can re-partition areas by the software in the installation CD.

[work around]
You have to encrypt file by file when you write files in “secure area”